🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.62

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.43 AU - 0.61 AU

Year: 238 Days

Day: 43.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 2.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.57 AU - 0.69 AU

Year: 318 Days

Day: 22.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.49 AU - 0.77 AU

Year: 318 Days

Day: 29.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 149.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 697.5

Radius: 8.5

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.97 AU - 1.05 AU

Year: 645 Days

Day: 10 Hours

Environment

Temp: -157 °C

Axial Tilt: 68.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 17,057,218 km

• M1: 105,766 km (0.06 R)
• M2: 375,790 km (0.1 R)
• M3: 660,624 km (0.103 R)
• M4: 989,590 km (0.113 R)
• M5: 1,304,045 km (0.082 R)
• M6: 1,645,726 km (0.103 R)
• M7: 1,983,069 km (0.07 R)
• M8: 2,286,005 km (0.099 R)
• M9: 2,798,827 km (0.11 R)
• M10: 3,181,797 km (0.103 R)
• M11: 3,723,491 km (0.101 R)
• M12: 4,481,653 km (0.119 R)
• M13: 5,446,559 km (0.117 R)
• M14: 6,261,568 km (0.077 R)
• M15: 6,876,715 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 25.7

Radius: 14

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.14 AU - 1.64 AU

Year: 1042 Days

Day: 13.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 17,057,218 km

• M1: 174,431 km (0.11 R)
• M2: 632,949 km (0.112 R)
• M3: 1,343,090 km (0.104 R)
• M4: 2,205,671 km (0.096 R)
• M5: 2,980,738 km (0.075 R)
• M6: 3,522,880 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.6

Radius: 14.5

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 3.46 AU - 5.32 AU

Year: 5848 Days

Day: 12.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 17,057,218 km

• M1: 180,714 km (0.054 R)
• M2: 1,105,977 km (0.115 R)
• M3: 1,872,965 km (0.116 R)
• M4: 2,462,680 km (0.111 R)
• M5: 3,091,889 km (0.093 R)
• M6: 4,165,104 km (0.102 R)
• M7: 4,721,458 km (0.106 R)
• M8: 5,254,625 km (0.104 R)
• M9: 5,879,944 km (0.076 R)
• M10: 7,616,626 km (0.089 R)
• M11: 8,287,423 km (0.075 R)
• M12: 8,893,593 km (0.104 R)
• M13: 11,911,581 km (0.101 R)
• M14: 13,860,692 km (0.077 R)
• M15: 15,708,375 km (0.073 R)
• M16: 16,586,066 km (0.05 R)
• M17: 17,333,307 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803.7

Radius: 9.7

Gravity: 8.54 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 4.06 AU - 6.38 AU

Year: 7583 Days

Day: 5.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 17,057,218 km

• M1: 120,576 km (0.038 R)
• M2: 451,038 km (0.071 R)
• M3: 900,729 km (0.063 R)
• M4: 1,381,536 km (0.118 R)
• M5: 2,704,131 km (0.113 R)
• M6: 3,293,397 km (0.041 R)
• M7: 3,864,562 km (0.096 R)
• M8: 4,902,921 km (0.111 R)
• M9: 5,204,959 km (0.1 R)
• M10: 6,256,033 km (0.086 R)
• M11: 7,521,781 km (0.111 R)
• M12: 7,965,787 km (0.106 R)
• M13: 8,950,740 km (0.111 R)
• M14: 9,266,092 km (0.041 R)
• M15: 9,823,943 km (0.093 R)
• M16: 14,376,056 km (0.098 R)
• M17: 16,427,941 km (0.101 R)
• M18: 20,166,840 km (0.117 R)
• M19: 22,897,001 km (0.081 R)
• M20: 26,321,147 km (0.057 R)
• M21: 27,157,399 km (0.106 R)
• M22: 29,972,233 km (0.112 R)
• M23: 32,023,219 km (0.113 R)
• M24: 33,513,364 km (0.034 R)
• M25: 33,947,497 km (0.109 R)
• M26: 34,385,370 km (0.042 R)
• M27: 36,288,554 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.8

Radius: 13.1

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 5.3 AU - 6.14 AU

Year: 8698 Days

Day: 7.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 17,057,218 km

• M1: 190,737 km (0.116 R)
• M2: 651,798 km (0.044 R)
• M3: 1,112,111 km (0.089 R)
• M4: 2,211,954 km (0.068 R)
• M5: 2,927,930 km (0.063 R)
• M6: 4,208,786 km (0.101 R)
• M7: 6,209,508 km (0.102 R)
• M8: 6,762,123 km (0.088 R)
• M9: 12,519,995 km (0.068 R)
• M10: 13,447,353 km (0.058 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 323 - 17,106 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit